Question

0.2 m3of air at 4 bar and 130°C is contained in a system. A reversible
adiabatic expansion takes place till the pressure falls to 1.02 bar. The gas is then heated at constant pressure till the enthalpy increases by 72.5 kJ. Calculate the work done.

Answer 1

Answer:

ANSWER

For 5x−6y+30=0:

x 0 -6 6

y 5 0 10

For x−y−1=0:

x 0 4 -4

y 5 0 10

As the graph shows, vertices of triangle are (0,5),(−6,0)&(4,0).